1 files changed, 38 insertions, 39 deletions

diff --git a/include/linux/quota.h b/include/linux/quota.h
index a6861f117480..94c1f03b50eb 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -174,6 +174,7 @@ enum {
 #include <linux/rwsem.h>
 #include <linux/spinlock.h>
 #include <linux/wait.h>
+#include <linux/percpu_counter.h>
 
 #include <linux/dqblk_xfs.h>
 #include <linux/dqblk_v1.h>
@@ -238,19 +239,36 @@ static inline int info_dirty(struct mem_dqinfo *info)
         return test_bit(DQF_INFO_DIRTY_B, &info->dqi_flags);
 }
 
+enum {
+        DQST_LOOKUPS,
+        DQST_DROPS,
+        DQST_READS,
+        DQST_WRITES,
+        DQST_CACHE_HITS,
+        DQST_ALLOC_DQUOTS,
+        DQST_FREE_DQUOTS,
+        DQST_SYNCS,
+        _DQST_DQSTAT_LAST
+};
+
 struct dqstats {
-        int lookups;
-        int drops;
-        int reads;
-        int writes;
-        int cache_hits;
-        int allocated_dquots;
-        int free_dquots;
-        int syncs;
+        int stat[_DQST_DQSTAT_LAST];
+        struct percpu_counter counter[_DQST_DQSTAT_LAST];
 };
 
+extern struct dqstats *dqstats_pcpu;
 extern struct dqstats dqstats;
 
+static inline void dqstats_inc(unsigned int type)
+{
+        percpu_counter_inc(&dqstats.counter[type]);
+}
+
+static inline void dqstats_dec(unsigned int type)
+{
+        percpu_counter_dec(&dqstats.counter[type]);
+}
+
 #define DQ_MOD_B        0       /* dquot modified since read */
 #define DQ_BLKS_B       1       /* uid/gid has been warned about blk limit */
 #define DQ_INODES_B     2       /* uid/gid has been warned about inode limit */
@@ -279,9 +297,6 @@ struct dquot {
         struct mem_dqblk dq_dqb;        /* Diskquota usage */
 };
 
-#define QUOTA_OK          0
-#define NO_QUOTA          1
-
 /* Operations which must be implemented by each quota format */
 struct quota_format_ops {
         int (*check_quota_file)(struct super_block *sb, int type);      /* Detect whether file is in our format */
@@ -295,13 +310,6 @@ struct quota_format_ops {
 
 /* Operations working with dquots */
 struct dquot_operations {
-        int (*initialize) (struct inode *, int);
-        int (*drop) (struct inode *);
-        int (*alloc_space) (struct inode *, qsize_t, int);
-        int (*alloc_inode) (const struct inode *, qsize_t);
-        int (*free_space) (struct inode *, qsize_t);
-        int (*free_inode) (const struct inode *, qsize_t);
-        int (*transfer) (struct inode *, struct iattr *);
         int (*write_dquot) (struct dquot *);            /* Ordinary dquot write */
         struct dquot *(*alloc_dquot)(struct super_block *, int);        /* Allocate memory for new dquot */
         void (*destroy_dquot)(struct dquot *);          /* Free memory for dquot */
@@ -309,12 +317,6 @@ struct dquot_operations {
         int (*release_dquot) (struct dquot *);          /* Quota is going to be deleted from disk */
         int (*mark_dirty) (struct dquot *);             /* Dquot is marked dirty */
         int (*write_info) (struct super_block *, int);  /* Write of quota "superblock" */
-        /* reserve quota for delayed block allocation */
-        int (*reserve_space) (struct inode *, qsize_t, int);
-        /* claim reserved quota for delayed alloc */
-        int (*claim_space) (struct inode *, qsize_t);
-        /* release rsved quota for delayed alloc */
-        void (*release_rsv) (struct inode *, qsize_t);
         /* get reserved quota for delayed alloc, value returned is managed by
          * quota code only */
         qsize_t *(*get_reserved_space) (struct inode *);
@@ -322,17 +324,15 @@ struct dquot_operations {
 
 /* Operations handling requests from userspace */
 struct quotactl_ops {
-        int (*quota_on)(struct super_block *, int, int, char *, int);
-        int (*quota_off)(struct super_block *, int, int);
-        int (*quota_sync)(struct super_block *, int);
+        int (*quota_on)(struct super_block *, int, int, char *);
+        int (*quota_off)(struct super_block *, int);
+        int (*quota_sync)(struct super_block *, int, int);
         int (*get_info)(struct super_block *, int, struct if_dqinfo *);
         int (*set_info)(struct super_block *, int, struct if_dqinfo *);
-        int (*get_dqblk)(struct super_block *, int, qid_t, struct if_dqblk *);
-        int (*set_dqblk)(struct super_block *, int, qid_t, struct if_dqblk *);
+        int (*get_dqblk)(struct super_block *, int, qid_t, struct fs_disk_quota *);
+        int (*set_dqblk)(struct super_block *, int, qid_t, struct fs_disk_quota *);
         int (*get_xstate)(struct super_block *, struct fs_quota_stat *);
         int (*set_xstate)(struct super_block *, unsigned int, int);
-        int (*get_xquota)(struct super_block *, int, qid_t, struct fs_disk_quota *);
-        int (*set_xquota)(struct super_block *, int, qid_t, struct fs_disk_quota *);
 };
 
 struct quota_format_type {
@@ -357,26 +357,25 @@ enum {
 #define DQUOT_STATE_FLAGS       (DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED | \
                                  DQUOT_SUSPENDED)
 /* Other quota flags */
-#define DQUOT_QUOTA_SYS_FILE    (1 << 6)        /* Quota file is a special
+#define DQUOT_STATE_LAST        (_DQUOT_STATE_FLAGS * MAXQUOTAS)
+#define DQUOT_QUOTA_SYS_FILE    (1 << DQUOT_STATE_LAST)
+                                                /* Quota file is a special
                                                  * system file and user cannot
                                                  * touch it. Filesystem is
                                                  * responsible for setting
                                                  * S_NOQUOTA, S_NOATIME flags
                                                  */
-#define DQUOT_NEGATIVE_USAGE    (1 << 7)        /* Allow negative quota usage */
+#define DQUOT_NEGATIVE_USAGE    (1 << (DQUOT_STATE_LAST + 1))
+                                               /* Allow negative quota usage */
 
 static inline unsigned int dquot_state_flag(unsigned int flags, int type)
 {
-        if (type == USRQUOTA)
-                return flags;
-        return flags << _DQUOT_STATE_FLAGS;
+        return flags << _DQUOT_STATE_FLAGS * type;
 }
 
 static inline unsigned int dquot_generic_flag(unsigned int flags, int type)
 {
-        if (type == USRQUOTA)
-                return flags;
-        return flags >> _DQUOT_STATE_FLAGS;
+        return (flags >> _DQUOT_STATE_FLAGS * type) & DQUOT_STATE_FLAGS;
 }
 
 #ifdef CONFIG_QUOTA_NETLINK_INTERFACE